Well, I suppose that explains why no trigger but, I had intended to create two zones. I selected Zone A in the tab and created rectangle "A". I then selected Zone B in the tab and created a Zone to the left of that called "B". When I select Zone A in the tab, the crosshatch swaps. When I select Zone B in the tab, the crosshatch swaps again. I took that to mean, from the help file, it was showing me the defined zone I had selected.
As mentioned earlier, I had also created a similar setup with "space" between the two rectangles. I guess that does not meet the requirement of being in two different places?
If so, I'm afraid I will need much more elementary explanation of "zones" and how to create them. I do see that there appears to be a light crosshatch behind the "un highlighted" rectangle, but have no idea if that has any real meaning or is just an optical delusion.